Résumé / Abstract Journal-club_Univers

Journal-club Univers / Journal-club Universe

« Primordial black holes in the era of Planck and LIGO »

Yacine Ali-Haimoud
Center Cosmology Particle Physics, Physics Dept., New York Univ. (New York, New York, Etats-Unis d'Amérique)

LIGO's first direct gravitational-wave detections have revived interest in an old dark-matter candidate, primordial black holes (PBHs).
In this talk I will first discuss cosmic microwave background constraints to PBHs in the range of ~10 to a few hundred solar masses.
I will then discuss PBH binary formation processes and the resulting merger rates. In particular, I will argue that LIGO may already set the most stringent limits on PBH abundance, provided PBH binaries formed in the early Universe are not strongly perturbed by tidal fields due to non-linear structures.

jeudi 24 mai 2018 - 14:15
Salle 281, Institut d'Astrophysique
Pages web du journal-club / Journal-club's webpage